172557103 has 2 divisors, whose sum is σ = 172557104. Its totient is φ = 172557102.

The previous prime is 172557061. The next prime is 172557113. The reversal of 172557103 is 301755271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172557103 - 2¹³ = 172548911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172557113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86278551 + 86278552.

It is an arithmetic number, because the mean of its divisors is an integer number (86278552).

Almost surely, 2^172557103 is an apocalyptic number.

172557103 is a deficient number, since it is larger than the sum of its proper divisors (1).

172557103 is an equidigital number, since it uses as much as digits as its factorization.

172557103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 172557103 is about 13136.0992307458. The cubic root of 172557103 is about 556.7295589517.

The spelling of 172557103 in words is "one hundred seventy-two million, five hundred fifty-seven thousand, one hundred three".